Stencil



Jn; s, 1924. 1,480,200I

s.- ELLIOTT STENCIL Filed Aug- 7. 1922 2 Sheets-5118815' 1 /Z /z\ 2| Patented Jaa-8,1924.

UNITED' STATES PATENT OFFICE.

STERLING ELLIOTT, DECEASED, IATE NEWTON, MASSACHUSETTS; BY HARRIET ADELE ELLIOTT, EXECUTRIX, F NEWTON, MASSACHUSETTS.

STENCIL.

Application led August 7, 1922. Serial No. 580,006.

To all 'whom zt may concern:

Be it known that I, HARRIET ADELI. ELLIOTT, a citizen of the United States, and a resident of Newton, in thecounty of Middlesex and State of Massachusetts, declare that I am executrix of the last will and testament of STERLING ELLIOTT, late a citizen ofthe United States and resident of Newton, county of Middlesex, and'State of Massal.) chusetts,' deceased, 'and that the said STERLING ELLIOTT had invented an Improvement in Stencils, of which the' following is a specification.

This invention relates to stencils especially although not necessarily limited to use with such machines.

Stencils have previously been made from relatively heavy paper stock to form a frame having an aperture therein, and a thin sheet .of stencil or mimeograph paper is secured to the framel over the aperture. The frame has comprised `two superimposed sheets of heavy paper stock having aligned apertures posed between said superimposed heavy paper 'sheets and extended into the aligned apertures, and also havingV an aperture therein; and the mimeograph sheet is secured to a face of the middle sheet over the aperture therein, in which position it will be below the opposite faces of the stencil frame.

All sheets composing the frame are adhesively united together.

the manufacture' of the above-described -stencil frame. Due to the .fact that'the outer heavy sheets and the'inner thin sheet o the frame pire ltlakleln from diHerent rolls o paper stoc ,'t e v grosco ic :'o erties of the sheets may befand usiliallyp arid, dif-- ferent. When the sheets areformed into a completed frame and subsequentl assume uniform hygrosc'opic properties, t ere may be arelative shrinking or expansion of the l sheets and the inner and thin sheet, andalso the su erimposed outer sheets, may full u or bucgle; and the mimeograph sheet secured to the inner ed es of said inner sheet may be. forced above teface' of the stencil frame, which risl undesirable, or the sheet and the frame may be otherwise distorted.

'An object of-this invention is to provide a l K stencil of' improved construction formed `from a single sheet of paper stock whereby adapted for use with printing machines,

therein, and a thin sheet of paper stock dis Y over the window therein.

Considerable difficulty is experienced ,in-

all portions of it will be at the same hygroscopic condition and there will be no apprecia le tendency of the stencil frame to buckle or become distorted. p l

A further object is to provide a stencil frame that is relatively strong and substantial in construction.

Fig. l is a plan View of a portion of a sheet of paper stock blanked out for folding to form a stencil frame in accordance with my invention.

Fig 2 -is a section along line 2-2 of Filg. 1. i

ig. 3 isa view similar to Fig. 1 but with an a hesive coating a plied to one side of the sheet of paper Stoch.

Fig. 4 isa plan view showing the two parts of the paper sheet folded together and adhesively united.

F ig. 5 is a section along line 5-5 of 75 Fig. 4.

ig. 6 is a stencil frame. Fig. 7 is a-view similar to Fig. 6 but with a mimeograph sheet applied to the frame -plan View of the completed.

Fig. 8 is a section along line 8--8 of 'he stencil embodping my invention comprises the upper re atively thick sheet of paper stock 10 having thewindow 11 therein. A second. and lower sheet 12 of equal thickness is adhesively secured to said upper sheet by a suitable adhesive, as shellac, 'for instance, and said sheet is formed vfrom an adjacent` portiony of the same sheet from which said sheet 10 is formed. Said lower sheet-is formedwith a window'l therein which is ahgned with the window 11 inthe l upper sheet. Said window 13 is smaller, 95 however,`than said window 11 so thatthe A lower sheet extends Within the space lont# lined by, or the boundaries of, said window and forms a ledge 12,a within the op osite faces of the stencil frame. Astrip of) or'mimeographv aper 14 is adhesively se- `cured to said le ge by a suitable adhesive.

In the manufacture of the above-described stencil, both upper andlower sheet-S10 and 12 respectively ofthe stencil are formed of 105 one sheet of paper stock, and this constitutes an important object of the invention.

The paper stock 20 (see Fig. Dis-usually of substantiallength and in roll form and has a width somewhat more than twice the 110 thin A i width of the finished stencil to ait of ting the stencil to predetermined tinished dimensions. The sheet 20 is provided with a suitable crease line 21 in the middle portion thereof to define a line about which the two lateral portions are folded. A lon- .gitudinal row of large windows 11v are blanked out of that portion of the paper stool: dis osed on one side of the crease line 2].; and t e major axes of said windows are disposed parallel to the length of the paper stock; and a similar row of smaller windows`13 are blanked out on the other side of the crease line. Said windows 13 are smaller than said windows 11 so that, where the two parts of the sheet are folded together, at the crease line, the material in I that position of the sheet bearin the win- .The adhesive-coated paper stock is then folded upon itself about the crease line 2l LAand 'the two lateral portions of the sheet are superimposed oneon the 'other with the windows therein arranged in alignment, and the two portions are ladhesively united by the adhesive coating 22.

Fig. 4l illustrates the stencil atuthis stage in the process ot makin it.

The folded sheetis t en passedvthrough dies or is otherwise cut to form the separate stencils and also to trim and shape the edges thereof to produce the iinished stencil frame illustrated in Fig. 6.

llnasmuch as the completedv stencilv is termed from adjacent parts or a single sheet of paper stoclr, all parts thereof will he at' the samejnygroscopic condition and there will loe no appreciable tendency ci the stencil to buckle due to uneven expansion or contraction of portions thereof. I

lt will be noted that the adhesive coating 22 covers not only the body of the lower stencil sheet l2 1n the completed stencil trame, but also the ledge l2 which is adapted to receive and support the mimeograph sheet; and the coating on said ledge 1s desirable in that it assists in securing the mimeo raph sheetto said ledge, although the le ge, or it may be the mimeograph sheet is or may be additionally coated vwith an adhesive when the sheet is applied to the trame.

lt will be noted that with the 'construetion herein described the lowersheet l2 ot the completed stencil trame, extends inplreierably on thatv face j -pose two portions o neonato wardly beyond the outlines of the window ll in the upper stencil sheet so that a trame is reduced having increased strength and rigidity, as contrasted with the previous tri le sheet construction.

claim; Y Y I l. As a new article of manufacture, a stencil frame comprising two structurally identical superimposed paper sheets of equal thickness having their contiguous faces adhesively united, wherebyto form a unitaryvframe structure, both oir' said sheets having windows of didering dimensions therein, that sheet havingthe smaller window extended inwardly eyond the boundaries of the larger window to form a ledge.

2. As a new article of manufacture, a

stencil comprising two structurally identical superimposed aper sheets of equal thiol-.r-

ness having t eir contiguous faces adhesively united, whereby to form a unitary frame structure, both of said sheets having windows of didering dimensions therein, that sheet having the smaller window .eirtended inwardly loeyondl the boundaries of the large window to -orm a ledge, and a stencil sheet received within the larger window and adhesively secured to said ledge.

3. The/method of making astencil frame which consists in forming windows of diff tering dimensions in a single sheet ol? paper stock, `folding the sheet to ysuperimpose two portions of said sheet with the windows lte .till

therein in alignment, and cutting the sten- Y cil iframe out of the folded sheet.

ll. 'lhe method of makingv a stencil trarne which consists in forming windows oi' ditering dimensions in adgacent portions oi a single sheet of paper stoclr, applying an adhesive .coating to one side oi said sheet, folding the sheet between the rows o windows with the adhesive coating disposed hc- `tween the superimposed' portions, and with the windows in alignment, and cutting sten cil frame from the folded and superimposed section. v

5. 'lhe l method et making a stencil trame which consists in tor-ming windows et ditfering dimensions a single sheet ol paper stoclr, and ioldm the sheet to superamsaid sheet with the windows therein in ali i: ent.

6. The method ot making a stencil which consists in forming windows oi diiitering dimensions in a single sheet ot paper steelt, folding the sheet to su erimpose two portions of said sheet with t e windows therein in ali over one ot said win ows and in said other' window. v ln testimony whereof, l have signed my name tothis specication.

Hllltltlll ADlELLlEliLlQTlF,

v/E'weoa-tffe' estate Sierlc'ag Eliten?, deceased.

.1. n and ap lying a stencil sheet 

